Double-acting oil and water pump



N. FELLABAUMl Sem. ls w23.,

DOUBLE ACTING OIL AND WATER PUMP f Filed May 2. 1922 2 Sheets-Sheet l gnou/Lio@ @um 5A JM Wit/neon www@ sept. w, w23., Mmm@ N. FELLABAUM' DOUBLE ACTING OIL AND WATER PUMP Filed May 29 `1922 2 Sheets-Sheet 2 y? //f i /l JL l y j A 55 A A :iL LQ/9 l remise sept. is, ieee.

Banditi@ moet DOUBLE-ACTING' OIL AND WATER PUMP.

Application led H8329, 1922. Serial No. 564,546.

" To all whom t may concern.'

Be it known that I, NEWTON FELLAnAUM,

a citizenof. the United States, residing at Sperry, in the county of Tulsa and State of `klahoma, have invented certain new and useful Improvements in Double-Acting Oil and Water Pumps; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.'

This invention relates to an improved double acting pump for use principally in connection with oil wells and. one object of the invention is to provide a pump having an improved arrangement of casing construction and also having an improved multiple standing valve in its lower portion and upper and lower working valves connected in an improved manner. l

Another object of the invention is to provide an improved base carrying the standing valve and having inner and outer pipes leading therefrom, the inner pipe having the lower workingl valve reciprocating therein and the base being so constructed that oil entering its lower end may be divided and part of it pass through the valve controlled lower portion of the standing valve and up into the outer pipe of the lower casing section and the remaining portion pass through the valve controlled upper portion of the standing valve into the inner pipe of the lower casing section in which thelower working valve moves.

Another object of the invention is to provide an improved type of connection between the lower casing section and the upper casing section, the means for connecting the two casing sect1ons includlng inner and outer sleeves commumcatlng with the inner and outer pipes of the casmg sections-the,

pump rod bemg passed into the upper casing section and connected with the upper e5 working valve and the upper andlower working valves being connected by a connecting rod passing through the inner tube of the device connecting the upper and lower casing sections. l Another object of the invention is to provide improved means for preventing flow of oil through the inner tube of the couplin section and to further provide improve means for anchoring packing and bushing elements within the inner sleeve of the c0upling section.

Another object of the invention is to provide improved means for releasing securing latches and permitting withdrawal of the working valves and packing and bushing means when so desired.

Another object of the invention is to so construct this double acting pump that the `oil'when leaving the base may pass partially through the inner pipe of the lower casing section and partially through the-outer pipe thereof, the oil in the inner pipeof the lower casing section then passing into the outer pipe of the coupling section to mix with'oil lpassing into the outer pipe of this coupling section from the outer pipe of the lower casing section and the 'oil passing upwardly through the coupling section and a portion of it passing directlyv into the outer pipe of the upper casing section and through the head of the pump into the well casing or stand pipe and the remainder passing lnto the inner pipe of the upper casing section in which the upper working valve moves. Another object of the invention is to so construct this pump that the parts thereof may be readil assembled or taken apart.

' This invention is illustrated in the accompanying drawings, wherein:

Figures 1 and lEL show the improved pump in vertical section.

Figure 2 is an enlarged sectional view of the coupling section and adjacent portions of thel upper and lower casing sections with the latch of the packing means released and the pumping means ready for withdrawal.

Figure 3 is an enlarged sectional view of the upper casing section with the upper working valve shown in section.

This improved oil pump is provided with a base portionvl having an inlet nozzle in the form of a pipe 2, a head 3 carried by a stand pipe 4 through which the oil passes to the surface of the ground, upper and lower casing sections indicated in general by the numerals 5 and 6, and an intermediate-coupling section whichis indicated in general by the numeral 7 and serves to connect the upperand lower casing sections 5 and 6. The base l is formed as a casting and is provided with acentral passage or .pocket 8in which is seated a standing valve 9 which is of a multiple construction and provided with a valve cage 10 at its upper end and a second valve cage intermediate its length. Passes 12 and 13` are formed in this base 1, the passage 12 extending from the lower end of the base and communicating with the pocket 8 intermediate its length so that oil passing through this passage 12 may enter the standing valveintermediate its` length and pass upwardly to the valve cage 10. The passage 13 has its lower end communicating with the pocket 8 in operative relation 'to the lower valve cage 11 so that oil passing upwardly through the lower end portion of this multiple standing valve 9 may pass into the lower end of the passage and upwardly throughthe same. The lower casing section is provided with inner and outer tubes or pipe sections 14 and 15, the inner tube 14 being screwed into a nipple 16 formed in the upper end portion 'of the base 1r and the outer tube 15 being screwed into a pocket in the upper end portion of the base and positioned in spaced relation to the nipple 16 into which the tube 14 is mounted. It will thus be seen that oil passing through the upper portion of the standing valve may pass into' the inner tube 14 of the lower casing section and that oil passing through the` lower portion of the standing valve may pass upwardly through 'the passage 13 and into the outer tube 15 of this lower casing section. The upper casing section is provided with inner and outer tubes 17 and 18 which correspond to the tubes 14 and 15 of the lower casing section and have their upper ends connected with the head 3, the inner tube 17 being screwed into a threaded socket 19 of the cap 3 and the outer tube having its upper end screwed into an annular seat or pocket i 20 formed in the lower face of this head.

Above the sleeve 19 into which the inner tube 17 is screwed, the head or cap 3 is hollow vand about the sleeve the head has been provided with either a plurality of oil pa's'- .sages or a single oil passage extending about the sleeve for the major portion of its-circumference. It will thus be seen that oil passing upwardly through 'the inner and outer tubes of the upper casing section can pass into the head 3 and from the head pass into the stand pipe or tube 4 through which it will pass upwardly to a point above the ground.

The intermediate or coupling section which connects the upper and lower casing sections is provided with an outer tube 21 and an inner tube 22 which is provided at its upper and lower ends with heads 23 and 24 which tit snugly within the upper and lower end portions `of the outer tube 21. The upper head or filler 23 is provided with a central passage 25 which forms a Continuation of the interior of the inner tube 22 and has its upper end portion internally threaded` so that the lower end of the inner tube 17 of the upper casing section may be screwed into the upperI head or filler. The inner portion 26 of this head extends in spaced relation to the outer walls of the heads of the major portion of the circumference thereof thus providing an oil passage 27 and the upper end portion of this head is internally threaded as shown clearly in Fig. 2 so that the lower end of the outer tube 18 of the upper casing section vmay be screwed into thev upper end portion of this head. Therefore, oil f passing upwardly through the outer tube 7 of the coupling section may pass through the oil passage 27 and into the lower end portion of the outer tube of the upper casing section. At one side, the central portion 26 of this upper head is solid with the outer portion and in this portion, there has been provided a passage 28 so that oil might pass upwardly through this passage and through the upper end thereof into the paage 25.and then up into the inner tube 17 of the upper casing section. It will thus be seen that oil passing upwardly through the coupling section may be divided and a portion of the oil pass up into the inner tube of the upper casing section and the remainder up into the outer tube of the upper casing section. At its lower end, the inner tube 22 has its head 24 provided with an extended-annular wall portion 29 which is internally lthreaded to receive the threaded upper end portion of the outer tube 15 of the lower casing section, a passage 30 is formed in this head 24 so that oil passing upwardly from the tube 15 may pass through this passage 30 into the outer tube 7 of the coupling section. The head 24 is provided with a central passage which is threadedl so that the upper end portion of the tube 14 of the lower casing section which extends above the upper end of the tube 15 may `be screwed into the threaded central opening of the head 24. Adjacent this head 249 the tube 22 is provided with a passage 31 communicating with the interior of the outer tube 21 so that oil passing upwardly through the tube 14 may pass into the outer tube 21 of the coupling section and mingle with the oil passing into this tube through the passage 30. It will thus be seen that'the oil which passes upwardly through the lower casing section through the inner and outer tubes thereof will be brought together in the coupling section and will then be again separated and a portion of it passed upwardly through the inner tube ofthe upper casing section and the remainder pass upwardly through the outer tube of the upper'casing section.

The pump rod 32 extends down throu h the stand pipe 4 into the inner tube 17 oft e gages with a cage 34 having the usual valve alls 35 positioned therein. rllyhis valve cage 34 is of the usual construction provided in connection with working valves of an oil ump and is connected with the usual hol,- ow stem 36 which carries the bucket 37 and has its lower end connected with a cage 38. A connecting rod 39 extends from this lower cage 38 through the inner tube 22 of the coupling section and down into the inner tube 14 of the lower casing section and has its lower end connected with the valve cage of the lower working valve.` This 'working valvefis indicated in general by the numeral 40 and is not described in detail as it will be a duplicate of the upper working valve.

The similarity of construction can be readily seen by comparing the upperworking valve shown in detail in Fig. 3 with the portion of the lower working valve shown in detail in Fig. 2. In `order to prevent passage of oil through the inner tube 22 of the couplingsection between the side ports 32 and upper end 'of the oil passage 28, there has been provided packing means including the sleeve 41 which fits within the tube 22 about the connecting rod 39 and has its upper end closed by a packing nut 42 which engages a washer 43 and will move this washer to compress a spring 44 thus placing the spring under tension so that the washer 45 beneath the spring will be moved to compress the packing material 46 about the connecting rod 39. Beneath the sleeve 41 and connected therewith, there has been provided a packing 41, the cup 48 preventing the oil from passing downwardly in this inner tube and the cup 49 preventing the oil from passing upwardly through the tube. Below the cup 49 is a tubular extension 50 which lits upon the connecting rod 39 and at its lower end is provided with upwardly extending spring atcharms 51 which are provided with longitudinally curved shoulders 52 and hook-shaped endportions 53. These latching arms 51 normally extend in diverging relation to the tube 50 so that when the working valves vare passed downwardly through the pipe 4 into the upper and lower casing sections, the hooked end portions 53 of the latches may move into the seats 54 and thus serve to anchor the packing means in the inner tube of the coupling sections. The coupling 55 which connects the lower end of the connecting rod 39 with the lower working valve 4() is in the form of a cup having oil passages 56 in its lower portion and having its walls provided with an annular seat 57 to receive the shoulders 52 of the latch arms. From an inspection of Fig. 2, it will be seen that when the pump rod is drawn upwardly to withdraw the working valve, the armsl will be engaged by the walls of the coupling cup and moved to-the inoperative position where they will be held when the shoulders are positioned in the seats. The working valves can thusbe readily Withdrawn and will be retained in the inoperative position until the cup has been moved to release the latch arms.

YVhen this pump is in operation and set up, the standing valve is mounted in the base and the upper and lower working valves are positioned in the upper and lower casing sections and connected by the connecting rod, the packing for the connecting rod being anchored in the inner tube of the coupling section. As the pump rod reciprocates, the oil is sucked past the upper and lower valve members 01: the standing valve 9 into the inner and outer tubes of the lower `casing section and passes upwardly into the .the inner tube of the coupling section and as previously explained is then divided, a portion passing into the outer tube of the upper casing section and the remainder being sucked into the inner tube of the up-per casing section by the upper working valve. The oil from the inner tube of the upper casing section is forced up through the head 3 into the pipe 4 and this oil willrserve to form a suction which will assist in drawing the oil upwardly through the outer tube of the upper casing section. It will thus be seen that the oil will be forced upwardly through the upper and lower casing sections and coupling section by a double pump action and that the oil will therefore be pumped ina very effective manner. It will be further noted that if for any reason one of the working valves should become clogged, the other will remain in operation and thus permit the well to remain in operation until it can be conveniently shut down and cleaning or repairing done. When it is desiredto perform the cleaning, the pump shaft is drawn upwardly and carries with it the working valves. As the connecting rod. 39 is drawn upwardly, the cup 55 engages the latching arms and moves them to a releasing position so that the entire structure can be bodily withdrawn from the well. The working valves can then be thoroughly cleaned and replaced. After the necessary cleaning and repairing has been performed and the device is again lowered into the well, the packing having been previously moved out of position for engagement of the spring latch arms by the cup, these latch arms will engage the walls of the inner tube 'until the hooked end portions enter the seat held in the inner tube of the coupling section. lf it is necessary to remove the clamping valve in order to clean .or repairit, the working valves and pump rod will be removed 'from the well and the standing valve can be removed with the usual extracting device, and then repaired and replaced.

I claim:

1. A pump structure includin upper and lower casing sections, a coup ing section connecting said casing sections, working valves in said casing sections, a connecting rod connecting said valves and extending through said cou'pling'section9 a stulii'ng box about said rod positioned in saidv coupling Section, anchoring means normally retaining saidstuing box in said coupling section, and means Afor moving said anchoring means to an inoperative position and permitting removal of the working valves and connecting rod and stulhng box.

2. The structure of claim 1 having the coupling section provided internally with a seat for receiving said anchoring means.

3.l The structure of claim 1 having the coupling section provided internally with a seat for receiving the anchoring means, the anchoring means being formed of resilient material and normally extending for fitting into said seat and the means for moving the anchoring mea-ns to an inoperative position being mounted beneath the stuffing box and moving into engagement with the anchoring means 'to move the anchoring means to an inoperative position when the working nasales valves and connecting rodhave been moved upwardly beyond their` normal working strokes. l

1. The `structure of claim 1 having the coupling section provided internally with an annular recess forming a seat, the anchoring means being in the form of resilient arms carried by the stuiing box and extendin rom the stuiiing box for fitting into sald seat, the means for moving said anchoring means to an inoperative position being carriedby the lower end portion of the coupling rod and engaging the arms to move 'the same out of said seat when the working valves and rod are moved upwardly beyond their normal strokes.

5. The struct-ure of claim 1 having the coupling section provided internally with a seat, the anchoring means being in the form of resilient,v arms extending upwardly in diverging relation to the stufiing box and provided at their ends with lugs for iitting into said seat, the means for moving the anchoring means to an inoperative position consisting of a sleeve carried by the lower end portion of the coupling rod and open at its upper end whereby the sleeve may move upwardly about said resilient arms and move the arms to an inoperative posit-ion when thev working valves and connecting rod are moved upwardly beyond 4their normal strokes.

In testimony whereof I have hereunto set my hand.

NEWTON FELLABAUM. 

